CN102192199A - Power driven system and oil pumping unit applying same - Google Patents
Power driven system and oil pumping unit applying same Download PDFInfo
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- CN102192199A CN102192199A CN2010102738962A CN201010273896A CN102192199A CN 102192199 A CN102192199 A CN 102192199A CN 2010102738962 A CN2010102738962 A CN 2010102738962A CN 201010273896 A CN201010273896 A CN 201010273896A CN 102192199 A CN102192199 A CN 102192199A
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Abstract
The invention relates to a power transmission system and application thereof, in particular to a gas-liquid kinetic energy driven system and an oil pumping unit applying the same. The power driven system comprises a gas-liquid accumulator, an execution plunger cylinder, a plurality of reversing valves and a pressure pump, which form a driving oil way and an oil return way, and a closed loop consists of the driving oil way and the oil return way. The oil pumping unit adopts the driven system to drive an oil pumping rod to vertically move and can be folded. The power driven system saves energy resources and has high efficiency and good effects of low carbon and emission reduction, and the oil pumping unit has a simple structure, a small size, less easily-damaged mechanical parts and long service life. By the power driven system and the oil pumping unit, the technical problems that the power system in the prior art requires large motive power and has poor energy-saving effect, and the oil pumping unit is easily fatigue and damaged and has multiple faults are solved.
Description
Technical field
The present invention relates to a kind of power transmission system and application thereof, relate in particular to a kind of gas-liquid kinetic energy drive system and use the pumping unit of this system.
Background technique
At present, the oil recovery machiner of Oilfield using all adopts mechanically operated slide beam and no beam pumping unit.It is slowed down through multi-stage gear by turning motor, affects mechanisms such as wire rope or chain to convert straight line motion to by horse head on the walking beam, drives oil pumping polish rod and moves up and down, realizes the oil pumping purpose.As Chinese patent " beam type hydraulic oil pumping machine (CN2561926Y) ", it is made up of machinery and hydraulic pressure two-part.Wherein mechanical part keeps original walking beam, horse head, support, chassis and rope hanger and outstanding rope; Hydraulic part comprises four chamber oil cylinders, main accumulator, reversing mechanism, oil sources and auxiliary system.Have bearing to be connected with special horse head between the arm of force end behind cylinder rod and the walking beam and be connected dual mode, this machine is finished balance and oil pumping function by main accumulator, oil cylinder and reversing mechanism; Realize that by auxiliary system energy-conservation, motion goes up fast slow, super down disconnected year stopping alarm, liquid level stopping alarm, temperature stopping alarm, stroke jig frequency and can be in harmonious proportion functions such as elimination sucker rod partial wear continuously.The pumping unit kinetic characteristic of this structure is poor, mechanical efficiency is low, the degree of balance is poor, energy consumption height, volume heavily wait defective.The component of machine of these intermediate conversion mechanisms, complex structure, easily damaged parts are many, and long-term operation easily produces friction and tired, causes various faults.Also has Chinese patent " energy-saving hydraulic pumping unit (CN2194423Y) ", fuel tank, oil purifier, prime mover, variable displacement pump, safety valve, accumulator, electro-hydraulic reversing valve, oil hydraulic cylinder, driving belt, sucker rod are arranged, feature is that the rodless cavity of oil hydraulic cylinder has been communicated with an accumulating mechanism, and driving belt is fixed on the pedestal after by a cylinder and a movable pulley that is located on the piston rod.This hydraulic structure is an open system, and energy-saving effect is bad.
Summary of the invention
The invention provides a kind of energy saving, the efficient height, the power-driven system that the low-carbon (LC) emission reduction effect is good, and a kind of simple in structure, volume is little, and mechanical quick-wear part is few, the pumping unit of long service life; It is big to have solved the required motive force of the power system that exists in the prior art, and energy-saving effect is not ideal enough, the easy fatigue damage of pumping unit, the technical problem that fault is many.
The present invention also provides a kind of good seal performance simultaneously, and is safe, can report to the police the power-driven system of convenient better seal ring, and a kind of can folding, the pumping unit of convenient carrying automatically; Solved the power-driven system seal structure complex that exists in the prior art, the pumping unit mechanical efficiency is low, is difficult for the technical problem of carrying.
Above-mentioned technical problem of the present invention solves by following technical proposals: a kind of power-driven system, comprise the gas-liquid accumulator and carry out plunger case that described gas-liquid accumulator is connected with hydraulic oil behind the first 2/2-way valve, first one-way valve, first selector valve, compression pump and second selector valve by pipeline successively and promotes to carry out plunger in the plunger case and finish the upstroke process and form and drive oil circuit; After the commutation of the first 2/2-way valve, the plunger of carrying out in the plunger case is in the down stroke process, after the pressurization of hydraulic oil by first selector valve and compression pump, selecting return line to send hydraulic oil back to the gas-liquid accumulator by second selector valve forms oil return circuit, drives oil circuit and oil return circuit and constitute closed loop.The upstroke process of plunger is by the expanding gas in the gas-liquid accumulator fluid to be exerted pressure, the gas-liquid kinetic energy that fluid produces regeneration is converted to the hydraulic pressure energy, hydraulic pressure can be through the compression pump repressurize, and the hydraulic pressure after the supercharging can enter in the two side columns plug cylinder active chamber by valve, high-pressure oil pipe, promotes plunger and rises.Plunger down stroke process, the pumping unit minimum loading enters compression pump entry end through plunger to the plunger case regenerated liquid pressure energy that produces of exerting pressure by oil pumping polish rod, the hydraulic oil of extracting out in the plunger case chamber through the compression pump supercharging is sent the gas-liquid accumulator back to again, the motion of realization down stroke, thereby make oil circuit form closed loop, realize the up-down stroke back and forth movement, upstroke is mainly born by the regenerated energy of gas-liquid kinetic energy, compression pump only adds about 20% auxiliary energy to be finished, down stroke mainly by the load of load on the plunger to the generation regenerated energy of exerting pressure of the fluid in the plunger case.Compression pump liquid only need add about 20% auxiliary energy to be finished, so the power-driven system energy-saving effect of gas-liquid kinetic energy can reach more than 80%.
The mode of operation of the load of gas-liquid kinetic energy can adopt full load also can adopt lotus mode semi-load, full load mode, the maximum weight P=load deadweight P that the external load of plunger hoists
0+ dynamic load rating weight P
1, the pressure that bears of the gas-liquid accumulator of full load mode is P
Q=P
0+ P
1, semi-load the lotus mode, maximum weight P=load that the external load of plunger hoists deadweight P
0+ dynamic load rating weight P
1/ 2, semi-load, the pressure of gas-liquid accumulator of lotus mode was to bear P
B=P
0+ P
1/ 2, the plunger that full load band load descends, by the deadweight P of load
0To producing the inlet that pressure oil enters compression pump in the plunger case chamber, through compression pump P
1Power increases to P again
Q, send plunger case hydraulic oil back to the gas-liquid accumulator, semi-load, lotus descended with the plunger of load, by the deadweight P of load
0To producing the inlet that pressure oil enters compression pump in the plunger case chamber, through compression pump P
1/ 2 power increase to P again
B, send plunger case hydraulic oil back to the gas-liquid accumulator, as preferably, the load rating of described compression pump is for carrying out 1/2 of dynamic load that plunger carried.Gong Zuo system balancing is good like this, and stability is high.Adopt the energy storage pressure of full load big, the cost height, semi-load, the lotus energy storage pressure was little, and cost is low.
As preferably, be connected with the air supplying pump and the second 2/2-way valve between described gas-liquid accumulator and described first two-way valve.Just in case the gas leakage of gas-liquid accumulator, system acquisition starts the tonifying Qi motor automatically to the air pressure dropping signal, opens the second 2/2-way valve, and air supplying pump reaches setting value to the tonifying Qi of gas-liquid accumulator.The stability of raising system and balance.
As preferably, be provided with plunger in the described execution plunger case, on the inwall of plunger case, be provided with the annular groove that several are parallel to each other, in groove, be provided with seal ring, between adjacent two seal rings, be provided with pressure transducer.
Described execution plunger case adopts multi-stage sealed.Multi-stage sealed working principle: Y
XMinimum green diameter direction gap is 0.12～0.2mm between RunddichtringO and the plunger, and under the effect of plunger case hydraulic pressure, first order seal ring eliminates the gap to radially direction distortion, realizes sealing.Remaining seal ring and hydraulic isolation do not participate in seal operation.As process t
1After time, when first order seal ring increases to critical gap because of wearing clearance, or bear axial pressure for a long time because of seal ring, the seal ring rearward end is got into the gap and tear that (working pressure of general seal ring is up to 32Mpa, native system working pressure＜7.5Mpa, it is very little this possibility of tearing to occur), at this moment, first order seal ring lost efficacy, and broke away from seal operation.The seal ring that hydraulic oil penetrates inefficacy immediately enters the second level.In like manner, second level seal ring is subjected to hydraulic pressure, and seal ring is to the distortion of direction radially, eliminated and plunger between the gap, participate in seal operation, through t
2After time, second level seal ring is to critical gap or tear and lost efficacy, and breaks away from seal operation, has third level seal ring to take over again.Thus, form a reserve sealing system of constantly taking over.Moreover when a seal ring job, all the other seal rings are in unloaded state, do not participate in sealing, and therefore, these seal rings only produce small wearing and tearing, and the speed of its wearing and tearing is more much smaller than the working seal spare of pressure-bearing.And job specification t
1＞t
2＞t
3...,＞t
N-1＞t
0=0.
The sealing system working index is exactly the life-span of plunger operative minor, and the operating life of this multi-stage sealed device equals the working life sum of each Sealing.Native system multi-stage sealed is according to the abrasion index of Sealing or by the optimal number of determining Sealing in the practice.Sealing position chief engineer makes the time limit design objective greater than 10000h.(365 * 24=8760h) defects liability period is changed whole seal rings, just can guarantee the sealing position of this column plug cylinder, is in long-term failure-free operation if the corrective maintenance phase is decided to be 1 year.
Described gas-liquid kinetic energy green low-carbon pumping unit is characterized in that being provided with forecast system sealing life.Between the two-stage seal ring, pressure transducer is set, in real time the closed chamber operating life is detected.Puncture the information that lost efficacy when each grade ring wear, pressure transducer sends to monitoring chamber with signal, understand the wear out failure information of this pumping unit seal ring for the monitor staff, current what ring wear lost efficacy, and when entering the work of afterbody seal ring, detection system is with activating alarm, the notice control room will be finished sealing life, must take urgent measure, change seal ring, guarantee the normal failure-free operation of gas-liquid kinetic energy green low-carbon pumping unit.
Sealing mechanism is provided with the life-span distant warning device, between each Sealing, pressure transducer is set, when first order seal fails, when hydraulic pressure enters second level sealing, be contained in 1～2 grade of pressure transducer pressurized between seal ring and send signal, inform first order seal fails, the pressure transducer that is positioned between 2～3 seal rings has signal, illustrates that second level seal ring lost efficacy ... when to the last the one-level sensor sends signal, illustrate that the sealing system operating life will finish, system detects warning signal, informs that the monitor staff must formulate maintenance measures immediately or change whole seal rings, guarantees that pumping unit normally moves.
As preferably, described execution plunger case comprises upper cylinder half and following cylinder, described upper cylinder half is connected by bolt with following cylinder, joint at upper cylinder half and following cylinder is provided with sealing gasket, the inner diameter of described upper cylinder half is less than the internal diameter of following cylinder, described seal ring is positioned at the inwall of upper cylinder half, be provided with safe back-up ring in the closed chamber that described plunger case forms, the upper end of described safe back-up ring is threaded with the lower end of described plunger, the external diameter of described safe back-up ring is not more than the described internal diameter of cylinder down, and the external diameter of described safe back-up ring is greater than the internal diameter of described upper cylinder half.Upper cylinder half and following cylinder seal by seal ring, thereby guarantee the sealability of plunger case.Because the external diameter of safe back-up ring is greater than the internal diameter of upper cylinder half, therefore safe back-up ring just can not up move when moving to the intersection of upper cylinder half and following cylinder again.Be connected with safe back-up ring in the lower end of plunger, thus can retrain plunger on move the limit, lose constraint in case prevent plunger, can penetrate as guided missile, cause a serious accident, guarantee the reliable operation safety of plunger case.
A kind of pumping unit that adopts above-mentioned power-driven system, comprise base, on described base, be connected with mobile base, be fixed with plunger case and gas-liquid accumulator on the described mobile base, being provided with the plunger case fixing frame and being positioned at the protective housing fixing frame of plunger case fixing frame top of described gas-liquid accumulator, be connected with down cable wind rope on the described plunger case fixing frame, be connected with cable wind rope on the described protective housing fixing frame, plunger end in the described plunger case is connected with crossbeam, be fixed with oil pumping polish rod on the described crossbeam, be connected with an end of the oil cylinder that rises and retires on described base, the other end of the described oil cylinder that rises and retires is connected on the cylinder bracket that rises and retires; Be connected with protective housing on the described guard shield fixing frame, be connected with an end of folding oil cylinder on the described protective housing, the other end of described folding oil cylinder is fixed on the folding cylinder bracket.Plunger is connecting oil pumping polish rod, realizes the oil pumping action thereby the motion of plunger drive oil pumping polish rod moves up and down, and guarantees the proper functioning of pumping unit.Can adjust rising and retiring of member on the mobile base by the oil cylinder that rises and retires, convenient folding, folding simultaneously oil cylinder also can be adjusted the folded state of protective housing.Whole pumping unit member is few, and complete machine does not have easily damaged partss such as intermediate conversion mechanism such as gear, bearing, wire rope, chain, and is simple in structure, in light weight, reliable performance, efficient height.Protective housing is in order to protect plunger not corroded by the dust dust storm, and hawser makes pumping unit normally operation in any abominable weather environment.
As preferably, described base comprises fixed base and activity adjustment seat, on fixed base, be provided with horizontal slide rail, on described horizontal slide rail, be provided with the activity adjustment seat, the bottom of shown activity adjustment seat is provided with the transverse groove that cooperates with horizontal slide rail, on described activity adjustment seat, be provided with and the horizontal vertical vertical slide rail of slide rail, described mobile base bottom is provided with the projection that cooperates with longitudinal rail, described mobile base and described activity adjustment seat are passed through bolt, one end of the described oil cylinder that rises and retires is fixed on the activity adjustment seat, the described cylinder bracket that rises and retires is positioned on the described gas-liquid accumulator, and described folding cylinder bracket is fixed on the gas-liquid accumulator.The activity adjustment seat can be in longitudinal sliding motion on the vertical slide rail, thereby adjust the lengthwise position of mobile base, simultaneously, mobile base again can be laterally movable on the activity adjustment seat, thereby adjust the lateral attitude of mobile base, after adjusting mobile base and activity adjustment seat hawser is fastened, thereby oil pumping polish rod is aimed at pithead position, implement oil pumping.
As preferably, be connected with the transition oil cylinder on the described protective housing, an end of described transition oil cylinder is connected on the protective housing by the transition buffer plate, and the other end of described transition oil cylinder is fixed on the plunger case fixing frame.Translate into the center of gravity transition point on the protective housing, the bottom contact transition cushion plate of protective housing, after center of gravity was crossed transition point, protective housing was along with the transition oil cylinder is slowly return, and plane on the protective housing bottom contact shielding support is stirred on the protective housing and is finished.Transition oil cylinder and transition buffer plate the stationarity that has improved the protective housing umklapp process is set, thereby make structure more reasonable, operate more stable.
Therefore, a kind of power-driven system of the present invention and the pumping unit of using this power-driven system thereof possess following advantage: power-driven system adopts closed loop lotus semi-load mode to operate, save the energy, multi-stage sealed structure, safe, structural stability, Economy compact and reasonable, system's lifting process balance.The pumping unit volume is little, and complete machine does not have quick-wear part, long service life, convenient moving and adjustment.
Description of drawings
Fig. 1 is the plan view of pumping unit of the present invention.
Fig. 2 is the left view in Fig. 1.
Fig. 3 is the pumping unit complete machine schematic representation of droping to the ground.
Fig. 4 is the folding schematic representation of protective housing.
Fig. 5 is the sectional structure schematic representation of left plunger case.
Fig. 6 is the schematic diagram of power-driven system.
Among the figure 1, fixed base, 2, vertical slide rail, 3, the movable base of regulating, 4, the oil cylinder that rises and retires, 5, base bearing pin 5A, mobile base, 6, the gas-liquid accumulator, 7, left side plunger case, 8, right plunger case, 9, folding oil cylinder 10, the plunger case fixing frame, 11, the protective housing fixing frame, 11a, excessive oil cylinder, 11b, excessive cushion plate, 12, protective housing, 13, last cable wind rope, 14, the protective housing bearing pin, 14A, folding oil cylinder bearing pin, 15, following cable wind rope 16, folding cylinder bracket, 17, bolt, 17A, bearing pin, 17B, the cylinder bracket that rises and retires, 18, well head, 19, oil pumping polish rod is device in succession, 20, oil pumping polish rod, 21, the oil pumping polish rod sheath, 22, upper cylinder half, the right plunger of 22A, 23, crossbeam, 23A, pulling force sensor, 23B, following cylinder, 23C, sealing gasket, 24A left side plunger, 24C, safe back-up ring, 24, first order seal ring, 25, second level seal ring, 26, third level seal ring, 27, fourth stage seal ring, 28, N level seal ring, 29, the final stage seal ring, 31 dust-proof seal rings, 32, the last stage pressure sensor, 33, N stage pressure sensor, 34, third level pressure transducer, 35, second level pressure transducer, 36, first order pressure transducer 37, digital pressure gauge, 38, first one-way valve 39, the first 2/2-way valve, 40, compression pump, 41, stop valve, 42, the compression pump motor, 42A, oil return circuit, 43, second selector valve, 44, drive oil circuit, 45, first selector valve, 46, second one-way valve, 47, the tonifying Qi motor, 48, air supplying pump, 49, the second 2/2-way valve
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technological scheme of inventing is described in further detail.
Embodiment:
As shown in Figure 1, a kind of pumping unit, comprise fixed base 1, on fixed base 1, be fixed with horizontal slide rail 2, laterally on the slide rail 2 activity adjustment seat 3 is being installed, the bottom of activity adjustment seat 3 offers the horizontal concrete chute that cooperates with horizontal slide rail 2, mobile base 5A is installed on activity adjustment seat 3, upper surface in activity adjustment seat 3 is provided with and the horizontal vertical vertical slide rail of slide rail, be provided with the projection that cooperates with vertical slide rail in the bottom surface of mobile base 5A, the relative position of mobile base 5A and activity adjustment seat 3 determines that the back is fixing by bolt 17.Be fixed with the left plunger case 7 that is positioned at front end on the mobile base 5A, right plunger case 8 and the gas-liquid accumulator 6 that is positioned at the plunger case rear side, gas-liquid accumulator 6 is cylindric, the last fixing column plug cylinder fixing frame 10 of gas-liquid accumulator 6 and the protective housing fixing frame 11 that is positioned at plunger case fixing frame 10 tops, be connected with down cable wind rope 15 on the plunger case fixing frame 10, be connected with cable wind rope 13 on the protective housing fixing frame 11, plunger end in the plunger case is connected with crossbeam 23, be fixed with oil pumping polish rod 20 on the crossbeam 23, be connected with an end of the oil cylinder 4 that rises and retires in activity adjustment seat 3, the other end of oil cylinder 4 of rising and retiring is connected on the cylinder bracket 17B that rises and retires by bearing pin 17A, and the oil cylinder 17B that rises and retires is fixed on the gas-liquid accumulator 6; Be connected with protective housing 12 on the guard shield fixing frame 11, be connected with an end of folding oil cylinder 9 on the protective housing 12 by folding oil cylinder bearing pin 14A, the other end of folding oil cylinder 9 is fixed on the folding cylinder bracket 16, folding cylinder bracket 16 is fixed on the gas-liquid accumulator 6 too, and folding cylinder bracket 16 is positioned at the top of the cylinder bracket 17B that rises and retires.
Gas-liquid accumulator 6, left plunger case 7, right plunger case 8 are fixed on the mobile base 5A on the gas-liquid accumulator, form the pumping unit support.Mobile base 5A is hinged on the base bearing pin 5, and the cylinder bottom earrings of the oil cylinder 4 that rises and retires is hinged on the activity adjustment seat 3, and the piston rod head earrings of the oil cylinder 4 that rises and retires is hinged on the bearing pin 17A at gas-liquid accumulator 6 middle parts.Protective housing 12 is hinged on the protective housing bearing pin 14 of shielding support 11.The bottom earrings of folding oil cylinder 9 is hinged on the bearing pin of folding cylinder bracket 16, and the piston rod head earrings of folding oil cylinder 9 is hinged on the folding oil cylinder bearing pin 14A.
Adjusting activity adjustment seat 3 just can accurately be aimed at well head 18 with the oil pumping polish rod on the support 20.Tight a bolt 17, be fixed on the activity adjustment seat 3, tighten the bolt that each activity adjustment seat 3 is connected with fixed base 1 again, regulate oil pumping polish rod and pithead position and just finished.
Cable wind rope 13 ties up to protective housing 12 tops on one group, and another group cable rope 15 down ties up on the shielding support 11, and the lower end ties up on the earth anchor, the attack that makes the oil pumping function resist strong storm.
As shown in Figure 2, oil pumping polish rod 20 be enclosed within oil pumping polish rod sheath 21 in, the lower end of oil pumping polish rod 20 is provided with polished rod connector 19, the upper end of oil pumping polish rod 20 is provided with pulling force sensor 23A.Plunger 22A, 24A in the protective housing 12 protection motions constitute totally-enclosed system, and protection left and right sides plunger 22A, 24A and oil pumping polish rod 20 are not subjected to the ambient wind dust pollution.
As shown in Figure 3, lay down being connected of cable wind rope 13 and earth anchor, under when turning over, start excessive oil cylinder 11a, promote excessive cushion plate 11b, excessively cushion plate 11b and protective housing 12 are that bearing pin 14 is the center of circle jointly, excessively cushion plate 11b is attached to protective housing 12 bottoms, along with excessive oil cylinder 11a rises, protective housing 12 is to rotation counterclockwise, when the center of gravity that forwards protective housing 12 to is crossed transition point, folding oil cylinder 9 relays, excessively oil cylinder 11a cylinder stops, and protective housing 12 is rotated down 180 degree along with folding oil cylinder 9 is slowly return.
When turning on the protective housing 12, handle folding oil cylinder 9, protective housing 12 is the center of circle with bearing pin 14, and along with the rising of folding oil cylinder 9, protective housing 12 turns over along clockwise direction, on translate into the center of gravity transition point, the bottom of protective housing 12 contacts excessive cushion plate 11b, and after center of gravity was crossed transition point, protective housing 12 was along with excessive oil cylinder 11a slowly returns, plane on the protective housing 12 bottoms contact shielding support 11 is stirred on the protective housing 12 and is finished.
As shown in Figure 4, the pumping unit complete machine mechanism that erects, drops to the ground, pumping unit support 6 is supported on the mobile base 5A.Mobile base 5A is the center of circle with base bearing pin 5, starts the both sides oil cylinder 4 that rises and retires, and drives the pumping unit complete machine and stands up counterclockwise or drop to the ground clockwise.
A kind of power-driven system, as shown in Figure 6, comprise gas-liquid accumulator 6, digital pressure gauge 37 is installed on gas-liquid accumulator 6, the outlet port of gas-liquid accumulator 6 is equipped with stop valve 41, gas-liquid accumulator 6 is connected with the first 2/2-way valve 39 by pipeline successively, first one-way valve 38, first selector valve 45, left plunger 24A and right plunger 22A that compression pump 40 and second selector valve, 43 back hydraulic oil promote in left plunger case 7 and the right plunger case 8 finish upstroke process formation driving oil circuit 44, connect compression pump motor 42 on the compression pump, the structure of left plunger case 7 and right plunger case 8 is identical; Be connected with the air supplying pump 48 and the second 2/2-way valve 49 between gas-liquid accumulator 6 and described first two-way valve 39, be connected with tonifying Qi motor 47 on the air supplying pump 48, just in case gas-liquid accumulator 6 gas leakage, system acquisition is to the air pressure dropping signal, automatically start the tonifying Qi motor, open the second 2/2-way valve, air supplying pump 48 reaches setting value to 6 tonifying Qi of gas-liquid accumulator.When needs carry out the down stroke process, after 39 commutations of the first 2/2-way valve, the plunger of carrying out in the plunger case is in the down stroke process, and after the pressurization of hydraulic oil by first selector valve 45 and compression pump 40, the load rating of compression pump is 1/2 of the execution dynamic load that plunger carried.Selecting oil return circuit 42A to send hydraulic oil back to gas-liquid accumulator 6 by second selector valve 43 forms oil return circuit, drives oil circuit 44 and constitute closed loop with oil return circuit 42A.
As shown in Figure 5, carry out plunger case and comprise upper cylinder half 22 and play cylinder 23, upper cylinder half 22 and following cylinder 23 are connected by bolt, are provided with sealing gasket 23C in the joint of upper cylinder half 22 and following cylinder 23, and the inner diameter of upper cylinder half is less than the internal diameter that plays cylinder.On the inwall of upper cylinder half 22, offer the annular groove that is parallel to each other, in annular groove, be provided with multi-stage sealed circle, between every two adjacent seal rings, pressure transducer is installed.Carry out in the plunger case and be provided with plunger 24A, the end of plunger 24A is connecting crossbeam, the other end of the plunger safe back-up ring 24C that is threaded, the identical internal diameter greater than upper cylinder half 22 of internal diameter of the external diameter of safe back-up ring 24C and following cylinder 23.
As shown in Figure 5, upper cylinder half 22 is equipped with multi-stage sealed circle 24～29, adopt Yx type or U RunddichtringO, multi-stage sealed circle 24～29, minimum green diameter direction gap is 0.12～0.2mm between seal ring and the plunger 20, during plunger case work, hydraulic oil in the drive post plug cylinder is exerted pressure to first order seal ring 24, first order seal ring 24 eliminates the gap to the diametric(al) distortion, realizes sealing.Remaining seal ring 25～29 is isolated with hydraulic oil, does not participate in seal operation.When through t1 after the time, when first order seal ring 24 increased to critical gap because of wearing clearance, first order seal ring 24 lost efficacy, and broke away from seal operation, and the first order seal ring 24 that hydraulic oil penetrates inefficacy immediately enters the second level.In like manner, second level seal ring 25 is subjected to air pressure, and second level seal ring 25 is to the distortion of direction radially, eliminated and plunger 24A between the gap,
Participate in seal operation, after the time, second level seal ring 25 may wear to critical gap and lost efficacy through t2, breaks away from seal operation, has third level seal ring 26 to take over again.Thus, form one and have the reserve sealing system of constantly taking over.Moreover when a seal ring job, all the other seal rings are in unloaded state, do not participate in sealing, and therefore, these seal rings only produce small wearing and tearing, and the speed of its wearing and tearing is more much smaller than the seal ring of pressure-bearing work.And job specification t1＞t2＞t3 ...,＞tn-1＞t0=0.
Among Fig. 5, N level seal ring 28 is according to the abrasion index of seal ring or by the best (N level) quantity of determining seal ring in the practice.The sealing system working index is exactly the life-span of plunger operative minor, and the operating life of this multi-stage sealed device equals the working life sum of each seal ring.The multi-stage sealed device of native system, the time limit design objective of always working was greater than 10000 hours.Change all sealings if the corrective maintenance phase is decided to be 1 year (365 * 24=8760 hour), just can guarantee the soft seal position of this machine drive post plug cylinder, be in continuously long-term failure-free operation.
Safe back-up ring 24C among Fig. 5 is fixed on plunger base, and constraint moves the limit on the plunger, during the left plunger 24A of the last plane contact lower plane of promptly safe back-up ring 24C, promptly retrains the left plunger 24A limit that moves up.In case prevent the oil pumping polish rod fracture, left plunger 24A loses constraint, can penetrate as guided missile, causes a serious accident, and guarantees plunger case reliable operation, safety.
Among the embodiment shown in Figure 6, before the use gas-liquid accumulator 6 is added an amount of fluid, and implement inflation, it is standby to reach setting air pressure.When starting working, open stop valve 41, during upstroke, intelligent control system is instructed the first 2/2-way valve 39, first selector valve 45, second selector valve, 43 up stroke directions, start compression pump motor 42, drive compression pump 40, gas-liquid accumulator 6 expanding gas are exerted pressure to fluid, produce gas-liquid kinetic energy and be converted to the hydraulic pressure energy, hydraulic pressure can be through the first 2/2-way valve 39, first selector valve 45 enters the entry end of compression pump 40, compression pump motor 42 drives compression pump 40 repressurizes, hydraulic oil after the supercharging injects left and right sides plunger case 7 through second selector valve 43 along driving oil circuit 44 from the output of compression pump 40 outlet end, 8 active chamber, hydraulic pressure can promote left and right sides plunger 24A, 22A rises, and drive crossbeam 23, oil pumping polish rod 20 rises, and realizes the upstroke motion.
During down stroke, intelligent system instructs the first 2/2-way valve 39 to close, second selector valve 43,45 commutations of first selector valve, start compression pump motor 42, compression pump motor 42 drives compression pump 40 runnings, compression pump 40 is with left and right sides plunger case 7, hydraulic oil in 8 active chambers is extracted out, minimum Cheng Zaihe is drop-down with oil pumping polish rod 20 for pumping unit, oil pumping polish rod 20 drives crossbeam 23, by left and right sides plunger 24A, 22A is to plunger case 7,8 chamber inner fluids are exerted pressure, the hydraulic pressure that produces regeneration can enter compression pump 40 entry ends, after compression pump 42 repressurizes, export by compression pump 40 outlet end, again through second selector valve 43, oil return circuit 42A sends gas-liquid accumulator 6 back to, makes oil circuit form closed loop, realizes that up-down stroke comes and goes shuttling movement.
Controlling compression pump motor 42 speed, equal to control the flow of compression pump 40, also is simultaneously the speed or the jig frequency of control oil pumping polish rod 20, realizes the purpose of stepless speed regulation.
Just in case the gas leakage of gas-liquid accumulator, system acquisition starts tonifying Qi motor 47 automatically to the air pressure dropping signal of digital pressure gauge 37, opens the second 2/2-way valve 49, and air supplying pump 48 reaches setting value to the tonifying Qi of gas-liquid accumulator.
Last table is 12 type gas-liquid kinetic energy pumping unit technical parameter and computational charts
Learn from aforementioned calculation:
Gas-liquid kinetic energy low-carbon (LC) pumping unit is more energy-conservation up to more than 80% than traditional beam pumping unit.
One 12 type pumping unit reduces power of motor 30.636kw, 30.636kw/h (degree) equals per hour to economize on electricity, 1 year economize on electricity 365 * 24=8760 * 30.636=268371.36=26.84 ten thousand (degree), equal to save standard coal 26.84 * 0.4=107.36 ton, reduce disposal of pollutants 26.84 * 0.272=73004.8 kilogram=73 tons of carbon simultaneously, 26.84 * 0.785=210694 kilogram=210.69 ton carbon dioxide is (according to expert statistics: every saving 1 degree (kilowatt hour), saved 0.4 kilogram of standard coal with regard to corresponding, reduce disposal of pollutants 0.272 kg of carbon simultaneously, 0.785 kilogram of carbon dioxide).Above-mentioned energy-saving and emission-reduction, the low-carbon environment-friendly achievement will be made major contribution for society.
26.84 ten thousand degree electricity (by 1.80 yuan of Hangzhou electricity price for industrial uses/degree) can be saved 48.312 ten thousand yuan/year the electricity charge, and user enterprise is reduced cost, the strong impetus of increasing economic efficiency.
Simultaneously, to the reform generation important meaning of oil field oil production technology, be the arrival of oil production technology New Times.
Claims (9)
1. power-driven system, comprise the gas-liquid accumulator and carry out plunger case, it is characterized in that: described gas-liquid accumulator is connected with hydraulic oil behind the first 2/2-way valve, first one-way valve, first selector valve, compression pump and second selector valve by pipeline successively and promotes to carry out plunger in the plunger case and finish the upstroke process and form and drive oil circuit; After the commutation of the first 2/2-way valve, the plunger of carrying out in the plunger case is in the down stroke process, after the pressurization of hydraulic oil by first selector valve and compression pump, selecting return line to send hydraulic oil back to the gas-liquid accumulator by second selector valve forms oil return circuit, drives oil circuit and oil return circuit and constitute closed loop.
2. a kind of power-driven system according to claim 1 is characterized in that: the load rating of described compression pump is 1/2 of the execution dynamic load that plunger carried.
3. a kind of power-driven system according to claim 1 and 2 is characterized in that: be connected with the air supplying pump and the second 2/2-way valve between described gas-liquid accumulator and described first two-way valve.
4. a kind of power-driven system according to claim 1 and 2, it is characterized in that: be provided with plunger in the described execution plunger case, on the inwall of plunger case, be provided with the annular groove that several are parallel to each other, in groove, be provided with seal ring, between adjacent two seal rings, be provided with pressure transducer.
5. a kind of power-driven system according to claim 3, it is characterized in that: be provided with plunger in the described execution plunger case, on the inwall of plunger case, be provided with the annular groove that several are parallel to each other, in groove, be provided with seal ring, between adjacent two seal rings, be provided with pressure transducer.
6. a kind of power-driven system according to claim 5, it is characterized in that: described execution plunger case comprises upper cylinder half and following cylinder, described upper cylinder half is connected by bolt with following cylinder, joint at upper cylinder half and following cylinder is provided with sealing gasket, the inner diameter of described upper cylinder half is less than the internal diameter of following cylinder, described seal ring is positioned at the inwall of upper cylinder half, be provided with safe back-up ring in the closed chamber that described plunger case forms, the upper end of described safe back-up ring is threaded with the lower end of described plunger, the external diameter of described safe back-up ring is not more than the described internal diameter of cylinder down, and the external diameter of described safe back-up ring is greater than the internal diameter of described upper cylinder half.
7. pumping unit that adopts power-driven system as claimed in claim 1, comprise base, it is characterized in that: on described base, be connected with mobile base, be fixed with plunger case and gas-liquid accumulator on the described mobile base, being provided with the plunger case fixing frame and being positioned at the protective housing fixing frame of plunger case fixing frame top of described gas-liquid accumulator, be connected with down cable wind rope on the described plunger case fixing frame, be connected with cable wind rope on the described protective housing fixing frame, plunger end in the described plunger case is connected with crossbeam, be fixed with oil pumping polish rod on the described crossbeam, be connected with an end of the oil cylinder that rises and retires on described base, the other end of the described oil cylinder that rises and retires is connected on the cylinder bracket that rises and retires; Be connected with protective housing on the described guard shield fixing frame, be connected with an end of folding oil cylinder on the described protective housing, the other end of described folding oil cylinder is fixed on the folding cylinder bracket.
8. pumping unit according to claim 7, it is characterized in that: described base comprises fixed base and activity adjustment seat, on fixed base, be provided with horizontal slide rail, on described horizontal slide rail, be provided with the activity adjustment seat, the bottom of shown activity adjustment seat is provided with the transverse groove that cooperates with horizontal slide rail, on described activity adjustment seat, be provided with and the horizontal vertical vertical slide rail of slide rail, described mobile base bottom is provided with the projection that cooperates with longitudinal rail, described mobile base and described activity adjustment seat are passed through bolt, one end of the described oil cylinder that rises and retires is fixed on the activity adjustment seat, the described cylinder bracket that rises and retires is positioned on the described gas-liquid accumulator, and described folding cylinder bracket is fixed on the gas-liquid accumulator.
9. according to claim 7 or 8 described pumping units, it is characterized in that: be connected with the transition oil cylinder on the described protective housing, one end of described transition oil cylinder is connected on the protective housing by the transition buffer plate, and the other end of described transition oil cylinder is fixed on the plunger case fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273896.2A CN102192199B (en) | 2010-09-07 | 2010-09-07 | Power driven system and oil pumping unit applying same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273896.2A CN102192199B (en) | 2010-09-07 | 2010-09-07 | Power driven system and oil pumping unit applying same |
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| CN102192199A true CN102192199A (en) | 2011-09-21 |
| CN102192199B CN102192199B (en) | 2014-05-21 |
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| CN201010273896.2A Expired - Fee Related CN102192199B (en) | 2010-09-07 | 2010-09-07 | Power driven system and oil pumping unit applying same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103061717A (en) * | 2013-01-05 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Four-cylinder type hydraulic pumping unit |
| CN103061718A (en) * | 2013-01-05 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Dual-plunger cylinder type hydraulic pumping unit |
| CN103075133A (en) * | 2013-01-05 | 2013-05-01 | 无锡市科优液压设备制造有限公司 | Flow compensation type hydraulic pumping unit |
| CN104179666A (en) * | 2013-05-24 | 2014-12-03 | 中国石油化工股份有限公司 | Hydraulic oil pumping device and method |
| CN104370228A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Winch and oil pumping unit |
| CN104386609A (en) * | 2014-11-12 | 2015-03-04 | 中国石油天然气股份有限公司 | Lifting device |
| CN106321024A (en) * | 2016-08-31 | 2017-01-11 | 胜利油田高原石油装备有限责任公司 | Hydraulic Oil Pumping Unit Using Immobility Machine to Replace Piston Sealing Element in Oil Cylinder And iReplacing Method |
| CN113089477A (en) * | 2021-04-06 | 2021-07-09 | 四川川交路桥有限责任公司 | Hanging basket suspension system |
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| CN103061717A (en) * | 2013-01-05 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Four-cylinder type hydraulic pumping unit |
| CN103061718A (en) * | 2013-01-05 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Dual-plunger cylinder type hydraulic pumping unit |
| CN103075133A (en) * | 2013-01-05 | 2013-05-01 | 无锡市科优液压设备制造有限公司 | Flow compensation type hydraulic pumping unit |
| CN103061717B (en) * | 2013-01-05 | 2015-09-02 | 无锡市科优液压设备制造有限公司 | A kind of four cylinder type hydraulic oil pumps |
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| CN104370228A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Winch and oil pumping unit |
| CN104386609A (en) * | 2014-11-12 | 2015-03-04 | 中国石油天然气股份有限公司 | Lifting device |
| CN106321024A (en) * | 2016-08-31 | 2017-01-11 | 胜利油田高原石油装备有限责任公司 | Hydraulic Oil Pumping Unit Using Immobility Machine to Replace Piston Sealing Element in Oil Cylinder And iReplacing Method |
| CN106321024B (en) * | 2016-08-31 | 2018-09-28 | 胜利油田高原石油装备有限责任公司 | Motivation does not replace the hydraulic pumping unit and method of oil cylinder piston sealing element |
| CN113089477A (en) * | 2021-04-06 | 2021-07-09 | 四川川交路桥有限责任公司 | Hanging basket suspension system |
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| CN102192199B (en) | 2014-05-21 |
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